"The Environment, Rights and Future Generations", Moral Philosophy and the Twenty-first Century, Notre Dame: University of Notre Dame Press, pp. 93-105, 1978

"The Environment, Rights and Future Generations", Moral Philosophy and the Twenty-first Century, Notre Dame: University of Notre Dame Press, pp. 93-105, 1978, Box: 13, Folder: 47. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/315380 Accessed December 25, 2025.